Abstract：
:Daily fluctuations of nucleoli and nucleolar fibrillar centres in neurosecretory cells from the supraoptic nucleus (SON) were investigated in rats artificially synchronized for 3 weeks to a set 12 h light/12 h dark cycle with free access to food and water. Group of 3 animals were sacrificed by intracardiac perfusion every 4 h for a 24-h period and every 2 h between 22.00 h and 07.00 h. The SON of each animal was removed, and the mean nucleolar volume and the mean volume of the nucleolar fibrillar centres were estimated by a stereological analysis. The quantitative data showed that the fluctuations in the nucleolar volume of SON neurons depend on the time of sacrifice. A peak value was found in animals sacrificed at 03.00 h which was 1.5 times the value found in animals sacrificed at 19.00 h. The volume of fibrillar centres underwent small, but not significant changes over the 24-h period. None of the large fibrillary centres that can be observed in the superior cervical ganglion were found in the SON. Our results demonstrate that in these neurons the size of the nucleolus under-goes daily fluctuations. These results are discussed in the light of previous studies conducted at our laboratory on the circadian rhythm of nucleolar volume and of nucleolar components in neurons of the superior cervical ganglion.
journal_name
Cell Tissue Resjournal_title
Cell and tissue researchauthors
Bessone R,Seïte Rdoi
10.1007/BF00222351subject
Has Abstractpub_date
1985-01-01 00:00:00pages
393-6issue
2eissn
0302-766Xissn
1432-0878journal_volume
240pub_type
杂志文章abstract：:Two types of mammosomatotropes (MS), the small-granule and vesicle-granule MS, were detected in mouse adenohypophysis by electron microscopy and immunohistochemistry. Both cell-types were immunoreactive to prolactin (PRL) and growth hormone (GH) antisera. The small-granule MS contained small, round, solid secretory gr...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00225615
更新日期：1989-06-01 00:00:00
abstract：:The present lectin histochemical comparison of cauda epididymal and ampullary bovine sperm was conducted to investigate whether ampullary secretions are involved in altering the plasma-membrane glycoconjugates of sperm. A marked redistribution of glycoconjugates between sperm from these two regions was indeed revealed...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318822
更新日期：1994-03-01 00:00:00
abstract：:The occurrence and distribution of peptidergic nerves in the guinea pig uterus was studied by means of immunocytochemistry using numerous neuropeptide anti-sera. Neuropeptide Y (NPY)-immunoreactive (IR) nerves were the most abundant, whereas substance P (SP)-, calcitonin gene-related peptide (CGRP)-, and neurokinin A ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00226501
更新日期：1988-01-01 00:00:00
abstract：:In Streetsia challengeri left and right eyes have fused and become a single cylindrical photoreceptor, which occupies the basal half of a forward directed head projection. This unusual compound eye consists of approximately 2500 ommatidia, which are arranged in such a way that the animal has almost circumferential vis...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00225542
更新日期：1978-01-17 00:00:00
abstract：:Unfertilized eggs commonly lack centrioles, which are usually provided by the male gamete at fertilization, and are unable to assemble functional reproducing centrosomes. However, some insect species lay eggs that develop to adulthood without a contribution from sperm. We report that the oocyte of the parthenogenetic ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-006-0253-x
更新日期：2006-12-01 00:00:00
abstract：:In the present study, we have analyzed the direct effects of cytokines, which mediate the acute-phase response in liver, on connexin expression and gap-junctional intercellular communication in immortalized MHSV12 mouse hepatocytes. When these cells were stimulated for 24 h with interleukin 1 and interleukin 6, the am...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051184
更新日期：1998-11-01 00:00:00
abstract：:Olfactory marker protein (OMP) was first described as a protein expressed in olfactory receptor neurons (ORNs) in the nasal cavity. In particular, OMP, a small cytoplasmic protein, marks mature ORNs and is also expressed in the neurons of other nasal chemosensory systems: the vomeronasal organ, the septal organ of Mas...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-020-03349-9
更新日期：2021-01-15 00:00:00
abstract：:Besides their well-known function in cellular bioenergetics, the role of mitochondria in signaling regulation of cells homeostasis and survival has been uncovered during the past few decades. Possessing an independent genome and a unique genetic code, mitochondria biosynthesize protective stress response factors, the ...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-019-03049-z
更新日期：2019-08-01 00:00:00
abstract：:The fine structure of one of the cellular components of the nucleus recesses lateralis of trout is described. These cells have an enormously developed smooth endoplasmic reticulum which makes their identification easy. The relationship of this cell type with the ventricular cavity, neighbouring cells and the presence ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00206343
更新日期：1982-01-01 00:00:00
abstract：:The ultrastructure of crystalline beta granules of the islets of Langerhans in the alligator has been investigated. From optical diffraction analysis and serial sectioning, the existence of four distinct types of crystalline inclusions was established in ultrathin sections. The first type is the most frequent and is i...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00229618
更新日期：1978-03-13 00:00:00
abstract：:It is a well-established fact that the sympathetic, parasympathetic and enteric nervous systems are affected at early stages in Parkinson's disease (PD). However, it is not yet clarified whether the earliest pathological events preferentially occur in any of these three divisions of the autonomic nervous system (ANS)....
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-018-2851-9
更新日期：2018-07-01 00:00:00
abstract：:The spatial localisation of insulin-like growth-factor-binding protein-2 (IGFBP-2) and its mRNA was investigated during larval and post-larval developmental stages of the gilthead seabream ( Sparus aurata) by immunohistochemistry and in situ hybridisation with specific antisera and riboprobes. During larval developmen...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-004-0952-0
更新日期：2005-01-01 00:00:00
abstract：:Neurosecretory pathways were examined in normal male rats by the use of the immunoperoxidase technique for the localization of neurophysin in Bouin-fixed, deparaffinized sections. Using this technique two projections of extrahypothalamic neuorosecretory fibers can be traced to the sites of origin of the choid plexuses...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00232829
更新日期：1977-03-01 00:00:00
abstract：:Germ cells are set aside from somatic cells early in embryogenesis, and are responsible for transmitting genetic information through generations. Vasa is a highly conserved germ cell marker across animal phyla, and widely used to label primordial germ cells. Dabry's sturgeon is a rare and endangered species distribute...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-016-2418-6
更新日期：2016-10-01 00:00:00
abstract：:Beta-catenin is a multi-functional molecule that is involved in both cell-cell adhesion and signaling. We analyzed changes in beta-catenin gene expression during mouse molar tooth development by in situ hybridization. Prominent up-regulation of the expression of this gene was evident exclusively in the enamel knot at ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-005-0136-6
更新日期：2006-07-01 00:00:00
abstract：:Tactile hairs on the locust thorax can be divided into two classes by their external morphology and their central projection pattern: Short hairs, 10--100 micrometer in length, which are assembled in distinct plates and rows, and long hairs, 100--800 micrometer in length, which are distributed all over the body and ar...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00234546
更新日期：1981-01-01 00:00:00
abstract：:Endothelial repair to reestablish structural integrity following wounding is a complex process. Since the actin cytoskeleton undergoes specific changes in distribution as quiescent endothelial cells switch to activated migrating cells over a 6-h period following wounding (Lee et al. 1996), we studied tyrosine phosphor...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s004410051370
更新日期：1999-09-01 00:00:00
abstract：:Using isoenzyme-specific antisera, we have studied the distribution of protein kinase C isoforms in fetal mouse organs at the developmental age of 17 days. Two different sets of antibodies, produced by different manufacturers, were employed in this study. The specificity of the antisera was tested by immunoblotting ex...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00318364
更新日期：1995-06-01 00:00:00
abstract：:Calcitonin gene-related peptide (CGRP) was found extensively in the small intestine of both non-mammalian and mammalian vertebrates using radioimmunoassay and immunocytochemistry. By radioimmunoassay, the levels of CGRP in rats, mice, chickens, bullfrogs and rainbow trout were found to range from 91.5 to 419.1 ng/g ti...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00223142
更新日期：1989-10-01 00:00:00
abstract：:The circadian timing system is a neural network consisting of the hypothalamic suprachiasmatic nucleus, aided by the retina, other hypothalamic nuclei, autonomic regions of the spinal cord, sympathetic ganglia and the pineal gland. Extensive studies conducted over the last two decades have unravelled the principal ite...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s004410050652
更新日期：1996-09-01 00:00:00
abstract：:Exposure to maternal diabetes during fetal growth is a risk factor for the development of type II diabetes (T2D) in later life. Discovery of the mechanisms involved in this association should provide valuable background for therapeutic treatments. Early embryogenesis involves epigenetic changes including histone modif...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-017-2583-2
更新日期：2017-06-01 00:00:00
abstract：:Freeze-etch preparations of mesothelial cells taken from the peritoneum of mouse reveal the presence of vesicles invaginating the apical and the basal cell surfaces. These vesicles are scarcely seen within the cytoplasm. Long tortuous tubular profiles extend for considerable distance within the cytoplasm and are frequ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00219271
更新日期：1976-10-01 00:00:00
abstract：:The muscle cells of the ventricle, the branchial heart and the branchial heart appendages of Rossia macrosoma (Delle Chiaje) are studied. The ventricle myocardium has three muscle layers, while the other two organs exhibited a loose arrangement of muscle cells. The muscle cells of the ventricle, the branchial heart an...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：
更新日期：1977-12-13 00:00:00
abstract：:Post-translational glycosylation of proteins with O-linked β-N-acetylglucosamine (O-GlcNAcylation) and changes of galectin expression profiles are essential in many cellular stress responses. We examine this regulation in the liver tissue of hibernating thirteen-lined ground squirrels (Ictidomys tridecemlineatus) repr...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-020-03185-x
更新日期：2020-07-01 00:00:00
abstract：:Neurointermediate lobes from adult or 10-day-old rats were implanted by a stereotaxic procedure into the third ventricle of adult male rats, in an area close to the paraventricular nucleus. They were examined, using immunocytochemical and ultrastructural techniques, at times ranging from 1 week to 8 months. All grafts...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00224123
更新日期：1989-02-01 00:00:00
abstract：:Kidneys of 2 to 10 day-old rats of Wistar and Sprague-Dawley strains were fixed with glutaraldehyde by retrograde vascular perfusion and then prepared for observation in TEM and SEM. In addition methacrylate casts of differentiating glomerular capillaries were examined by SEM. Although the glomerular vascular pattern ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00233959
更新日期：1980-01-01 00:00:00
abstract：:The comparatively simple Caenorhabditis elegans intestine fulfills many of the complex functions of the mammalian digestive tract, liver, and fat tissues, while also having roles in pathogen defense, immunity, and longevity. In this review, we describe the structure of the C. elegans gut and how it develops from the e...
journal_title：Cell and tissue research
pub_type： 杂志文章,评审
doi：10.1007/s00441-019-03036-4
更新日期：2019-09-01 00:00:00
abstract：:Colonies of the ascidian Botryllus schlosseri undergo recurrent generation changes in which adult zooids are gradually resorbed and replaced by new blastogenic generations. During these periods, known as take-over phases, programmed cell death, which, on the basis of morphological analysis is ascribed to apoptosis, oc...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-003-0738-9
更新日期：2003-06-01 00:00:00
abstract：:Follicular dendritic cells (FDCs) are immune accessory cells found in the follicles of secondary lymphoid organs where they promote B cell maturation in germinal centers (GCs) that develop following antigen exposure. Recently, we published a method for isolating functional murine FDCs in high purity. We reasoned that ...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/s00441-007-0566-4
更新日期：2008-04-01 00:00:00
abstract：:The effects of radiotherapy on neuropeptide expression in the rat larynx were studied. Irradiation was given for five days, 6 or 8 Gray daily. Ten days after the end of irradiation, the larynx, the laryngeal nerves and different ganglia related to the larynx were dissected out from irradiated and control animals and p...
journal_title：Cell and tissue research
pub_type： 杂志文章
doi：10.1007/BF00300691
更新日期：1995-01-01 00:00:00
